Thank you!
Sadly i can't do anything about the crash, hopefully it wasn't the game's fault. That apple was supposed to be a "hidden" reward that's why it was a bit difficult to get.
We didn't want to make it too hard, that's why you can reset in rooms, we didn't want for you to have to restart the whole game.
You probably missed the fact that you can jump up the chains in the 2nd room, you get the 3rd item in the second room after that, and the 4th item drops from the boss himself.
We plan to work on it in the future, so we hope to see you again!